I have a Symmons Temptrol with a problem. I recently installed an on demand hot water heater and when I was done, I can't get a hot bath. Really hot shower, but not a hot bath. I am trying to get the T-31 knob off and I can't get it off the spline on the TA-10. Been there 30 years. Any suggestions? Yes, I did take the little screw out.
